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From: Steve Rasmussen
Vernal, UT
Since sapwood is live wood, do its growth rings continue to grow wider?

Extension Message
From: Jay Hayek
Extension Specialist, Forestry
Department of Natural Resources and Environmental Sciences
Think of it this way: sapwood is still conductive (water and nutrients), but the annual growth rings found in sapwood do not change -- they do not continue to grow in size (except for the the current year's latewood being laid down by the vascular cambium. Older sapwood eventually turns into heartwood.

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